Home / 312,715.68-431,569.23-190,255.84

Finding the Fourth Proportional to 312,715.68, 431,569.23 and 190,255.84

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Solution

The fourth proportional to 312,715.68, 431,569.23 and 190,255.84 is: 262,566.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,715.68 : 431,569.23 = 190,255.84 : x
  2. Step 2: Convert to fraction form
    312,715.68/431,569.23 = 190,255.84/x
  3. Step 3: Cross multiply
    312,715.68x = 431,569.23 × 190,255.84
  4. Step 4: Simplify right side
    312,715.68x = 82,108,566,371.80
  5. Step 5: Solve for x
    x = 82,108,566,371.80/312,715.68
  6. Step 6: Final answer
    x = 262,566.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.